You don't need to remove the console to remove the ACC unit. On the 1987 300D, you just pop off the wood trim piece and that reveals the screws you need to take out to get the ACC out of the console.

Carefully pry the wood trim piece that goes around the buttons near the corners. It has little friction tabs that hold it on.

Ken300D

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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles